Faculty of Natural Sciences: Recent submissions
Now showing items 521-540 of 2620
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Human coronavirus research: 20 years since the SARS-CoV outbreak
(Frontiers Media, 2022)This Editorial introduces 10 articles published in a Special Issue highlighting human coronavirus (hCoV) research on the twentieth anniversary of the outbreak of severe acute respiratory syndrome (SARS) in late 2002. ... -
Designing an optimal LSST deep drilling program for cosmology with type Ia supernovae
(American Astronomical Society, 2023)The Vera C. Rubin Observatory’s Legacy Survey of Space and Time (LSST) is forecast to collect a large sample of Type Ia supernovae (SNe Ia) expected to be instrumental in unveiling the nature of dark energy. The feat, ... -
Phylogeographic investigation of the bladder grasshopper Bullacris unicolor (Orthoptera Pneumoroidea) in South Africa
(Taylor and Francis Group, 2023)There are several factors, such as genetic drift, gene flow and migration that affect the population genetic structure and phylogeographic distribution of genetic lineages within single species. Previous studies of the ... -
Short-period pulsating hot-subdwarf stars observed by TESS: I. Southern ecliptic hemisphere
(EDP Sciences, 2023)We present results of a Transiting Exoplanet Survey Satellite (TESS) search for short-period pulsations in compact stellar objects observed in years 1 and 3 of the TESS mission, during which the southern ecliptic hemisphere ... -
Impact of body composition analysis on male sexual function: A metabolic age study
(Frontiers Media, 2023)Metabolic Age (MetAge) and body composition analysis may reflect an individual’s metabolic status, which is believed to influence male sexual and gonadal functions. Although erectile dysfunction (ED) and hypogonadism ... -
Whole-genome sequencing of African swine fever virus from wild boars in the Kaliningrad region reveals unique and distinguishing genomic mutations
(Frontiers Media, 2023)Since the first report of outbreaks of African swine fever (ASF) in Georgia in 2007, the disease has expanded into Europe, Russia, and Asia, spreading rapidly via contact with infected animals including domestic pigs and ... -
Plausible explanation for the third COVID-19 wave in India and its implications
(KeAi Communications, 2023)Recently some of us used a random-walk Monte Carlo simulation approach to study the spread of COVID-19. The calculations were reasonably successful in describing secondary and tertiary waves of infection, in countries such ... -
Hydrological modelling and climate adaptation under changing climate: A review with a focus in sub-Saharan Africa
(MDPI, 2022)Empirical evidence continues to show that climate change remains a threat to the stability of the hydrologic system. As the climate system interacts with the hydrologic cycle, one significant repercussion of global warming ... -
Spatial clustering of vegetation fire intensity using modis satellite data
(MDPI, 2022)This work analyses the spatial clustering of fire intensity in Zimbabwe, using remotely sensed Moderate Resolution Imaging Spectroradiometer (MODIS) active fire occurrence data. In order to investigate the spatial pattern ... -
Measurements of one-point statistics in 21-cm intensity maps via foreground avoidance strategy
(Oxford University Press, 2022)Measurements of the one-point probability distribution function and higher-order moments (variance, skewness, and kurtosis) of the high-redshift 21-cm fluctuations are among the most directstatistical probes of the ... -
The implementation of a risk based assessment approach by the South African Health pProducts Regulatory Authority (SAHPRA)
(Springer, 2023)An extensive backlog of pending regulatory decisions is one of the major historical challenges that the South African Health Products Regulatory Authority (SAHPRA) inherited from the Medicine Control Council (MCC). Revising ... -
Bioprospecting of Helichrysum species: Chemical profile, phytochemical properties, and antifungal efficacy against botrytis cinerea
(MDPI, 2023)Variation in plant species and extraction solvents play a crucial role in the recovery of their bioactive compounds and antifungal efficacy. Thus, in this study, a comparative investigation was carried out using extraction ... -
Remote sensing for water resources and environmental management
(MDPI, 2023)In line with the United Nations Sustainable Development Goal (SDG) 6, the main goal of the Special Issue on “Remote sensing for water resources and environmental management” was to solicit papers from a diverse range of ... -
Galaxy training: A powerful framework for teaching!
(NLM (Medline), 2023)There is an ongoing explosion of scientific datasets being generated, brought on by recent technological advances in many areas of the natural sciences. As a result, the life sciences have become increasingly computational ... -
In-silico and in-vivo evaluation of the cardiovascular effects of five Leonotis leonurus diterpenes
(Obikeze, K. et al. (2023). In-silico and in-vivo evaluation of the cardiovascular effects of five Leonotis leonurus diterpenes. Scientific African, 19, e01510. 10.1016/j.sciaf.2022.e01510, 2023)Leonotis leonurus extracts and compounds have been extensively studied for pharmacological effects. However, most of the diterpenes isolated from the plant have not been evaluated as possible contributors to the cardiovascular ... -
Green synthesis of silica and silicon from agricultural residue sugarcane bagasse ash – A mini review
(Royal Society of Chemistry, 2023)Silicon dioxide (SiO2), also known as silica, has received attention in recent years due to wide range of capable applications including biomedical/pharmaceutical, energy, food, and personal care products. This has accelerated ... -
In silico analysis of a putative dehalogenase from the genome of halophilic bacterium Halomonas smyrnensis AAD6T
(Taylor and Francis, 2022)Microbial-assisted removal of natural or synthetic pollutants is the prevailing green, low-cost technology to treat polluted environments. However, the challenge with enzyme-assisted bioremediation is the laborious nature ... -
Face-to-face versus online-based lectures: A covid-19 induced study on assessments
(Frontiers Media, 2022)There is much debate regarding the impact of COVID-induced lockdown on the standard of assessments, mainly since students were assessed at home via an online assessment platform. Regular orthodox lectures and assessments ... -
The vandels survey: The star-formation histories of massive quiescent galaxies at 1.0 < z < 1.3
(Oxford Academics, 2019)We present a Bayesian full-spectral-fitting analysis of 75 massive (M∗>1010.3M⊙) UVJ-selected galaxies at redshifts of 1.0 < z < 1.3, combining extremely deep rest-frame ultraviolet spectroscopy from VANDELS with ... -
Understanding seasonal dynamics of invasive water hyacinth (eichhornia crassipes) in the greater letaba river system using sentinel-2 satellite data
(Taylor & Francis Online, 2019)Water hyacinth (Eichhornia crassipes) is one of the most aggressive and lethal free-floating aquatic weed that degrades and chokes freshwater ecosystems and threatens aquatic life. Early detection and up-to-date information ...